Multi-flow multi-functional high-efficiency heat exchange tube and radiator

Abstract

The application discloses a kind of multi-flow path multifunctional high-efficiency heat exchange pipe and radiator, including outer tube, inner tube, first capillary network and second capillary network arranged in inner tube;Outer tube and inner tube form pipe interlayer;Water supply pipe network and return water pipe network are equipped in pipe interlayer;Water supply pipe network is connected with the water inlet end of a plurality of first capillary network and second capillary network respectively;Return water pipe network is connected with the water outlet end of a plurality of first capillary network and second capillary network respectively.The application is arranged in inner tube by sequentially alternating multiple capillary network, so that the whole pipe is filled with heat exchange branch pipe network, increase the contact area of fluid and heat exchange branch pipe network in pipe;And the capillary in adjacent two layers of capillary network is crossed and forms a certain angle, so that the flow state of fluid flow is turbulent in the cross-flow heat exchange process between fluid in pipe and capillary network, to promote the effect of convective heat transfer, improve heat exchange efficiency.

Description

Technical Field

[0001] This invention relates to a multi-flow-path, multi-functional, high-efficiency heat exchange tube and radiator. Background Technology

[0002] A heat exchanger is a device that transfers some of the heat from a hot fluid to a cold fluid; it is also called a heat exchanger. Heat exchangers play an important role in chemical, petroleum, power, food, and many other industrial production processes. In chemical production, heat exchangers can be used as heaters, coolers, condensers, evaporators, and reboilers, and are widely used.

[0003] High-efficiency heat exchange tubes are key heat exchange components in commercial air conditioners, used in large quantities and at high cost. They account for approximately 20-40% of the total cost of a commercial air conditioner. Reducing the weight of high-efficiency heat exchange tubes can effectively control unit costs. While the outer fins play a crucial role in the tube's energy efficiency, and the wall thickness is directly related to safety performance, excessively large inner teeth increase the pressure drop inside the tube, affecting heat exchange efficiency. Appropriately reducing the weight of the inner teeth can effectively reduce costs while minimizing pressure drop and improving heat exchange efficiency. Therefore, the optimal solution for reducing the weight of high-efficiency heat exchange tubes lies in reducing the weight of the inner teeth.

[0004] The heat exchange efficiency of heat exchange tubes directly affects the performance of heat exchange equipment or products. Therefore, solving the heat exchange performance problem is a major issue and one of the most critical technologies in many fields. Heat exchange tubes are a relatively mature type of heat exchanger element. Due to their good shape and structure, they are commonly used, with common types including threaded tubes, finned tubes, and spiral grooved tubes, and have a wide range of applications, solving many problems. However, the heat exchange efficiency of a single heat exchange tube is limited, especially when high-efficiency heat exchange is required, where it often falls short.

[0005] Based on this, a multi-flow-path, multi-functional, high-efficiency heat exchange tube is proposed to maximize the heat exchange efficiency of the heat exchange tube to meet the needs of the heat exchange device, especially in a small space where pipe heat exchange is required. Based on this heat exchange tube, a tubular radiator is designed. Summary of the Invention

[0006] The purpose of this invention is to provide a multi-flow-path, multi-functional, high-efficiency heat exchange tube and radiator to solve the problem of low heat exchange efficiency in existing heat exchange tubes.

[0007] To solve the above-mentioned technical problems, the present invention provides a multi-flow-path, multi-functional, high-efficiency heat exchange tube, including an outer tube, an inner tube, a first capillary network and a second capillary network disposed in the inner tube;

[0008] The first capillary network includes several first capillaries arranged in parallel with each other; the second capillary network includes several second capillaries arranged in parallel with each other; the first capillary network and the second capillary network are arranged alternately from top to bottom along the axial direction of the inner tube, and the several first capillaries and the several second capillaries form an angle between them.

[0009] A pipe interlayer is formed between the outer pipe and the inner pipe; a water supply network and a return water network are provided in the pipe interlayer; the water supply network is connected to the inlet ends of several first capillary networks and second capillary networks respectively; the return water network is connected to the outlet ends of several first capillary networks and second capillary networks respectively.

[0010] Furthermore, a number of first capillaries and a number of second capillaries are arranged perpendicularly and intersectingly.

[0011] Furthermore, the outer walls of the two adjacent first and second capillary networks come into contact.

[0012] Furthermore, the water inlet network includes several first and second water inlet mains installed within the pipe interlayer and extending axially along the inner pipe; the inlet ends of several first capillary tubes located on the same longitudinal line pass through the inner pipe and are connected to the same corresponding first water inlet main in the pipe interlayer; the inlet ends of several second capillary tubes located on the same longitudinal line pass through the inner pipe and are connected to the same corresponding second water inlet main in the pipe interlayer.

[0013] Furthermore, the inlet ends of several first water inlet mains and several second water inlet mains extend out to connect with the outer pipes and the main water inlet pipes; the main water inlet pipe is a semi-circular pipe that mates with the outer pipes.

[0014] Furthermore, the return water unit includes several first return water mains and second return water mains disposed within the pipe interlayer and extending axially along the inner pipe; the inlet ends of several first capillary tubes located on the same longitudinal line respectively pass through the inner pipe and are connected to the same corresponding first return water main in the pipe interlayer; the outlet ends of several second capillary tubes located on the same longitudinal line respectively pass through the inner pipe and are connected to the same corresponding second return water main in the pipe interlayer.

[0015] Furthermore, the outlet ends of several first return water mains and the outlet ends of second return water mains are both connected to the return water main through the outer pipe, and the return water main is a semi-circular pipe that cooperates with the outer pipe.

[0016] The invention also provides a radiator, characterized in that it includes multiple of the above-mentioned multi-flow-path, multi-functional, high-efficiency heat exchange tubes.

[0017] Furthermore, the radiator also includes a water distributor connected to the inlet end of a plurality of heat exchange tubes and a water collector connected to the outlet end of a plurality of heat exchange tubes; the water collection chamber of the water collector is equipped with a water inlet.

[0018] Furthermore, the outlet of the water collector and the inlet of the water distributor are directly connected through the heating water supply pipe and the heating water return pipe.

[0019] The beneficial effects of this invention are as follows: by setting up a multi-layer capillary network alternately in the inner tube, the entire pipe is filled with heat exchange branch pipes, which increases the contact area between the fluid in the pipe and the heat exchange branch pipes; and the capillaries in adjacent layers of capillary network intersect to form a certain angle, which makes it easier for the fluid in the pipe to flow in a turbulent state during the cross-convective heat exchange with the capillary network, thereby promoting the convective heat exchange effect and improving the heat exchange efficiency. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, use the same reference numerals to denote the same or similar parts. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0021] Figure 1 This is a cross-sectional view of a heat exchanger tube according to an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram showing the connection relationship between the first inlet water main, the first capillary tube, and the first return water main according to an embodiment of the present invention.

[0023] Figure 3 This is a schematic diagram of the connection structure between the first and second inlet water mains and the main inlet water pipe, and the connection relationship between the first and second return water mains and the main return water pipe, according to an embodiment of the present invention.

[0024] Figure 4 This is a schematic diagram of a heat sink structure according to an embodiment of the present invention.

[0025] The components are as follows: 1. Water distributor; 11. First water inlet; 2. Heat exchange tube; 21. Outer tube; 22. Inner tube; 3. Water collector; 31. First water outlet; 32. Water supply outlet; 4. First water inlet main pipe; 41. First capillary tube; 42. First return water main pipe; 5. Second water inlet main pipe; 51. Second capillary tube; 52. Second return water main pipe; 6. Main water inlet pipe; 61. Second water inlet; 7. Main return water pipe; 71. Second water outlet. Detailed Implementation

[0026] like Figure 1The multi-flow-path, multi-functional, high-efficiency heat exchange tube 2 shown includes an outer tube 21 and an inner tube 22. A first capillary tube network 41 and a second capillary tube network 51 are arranged in the inner tube 22. The first capillary tube network 41 includes a plurality of first capillary tubes 41 arranged in parallel with each other. The second capillary tube network 51 includes a plurality of second capillary tubes 51 arranged in parallel with each other. The first capillary tube network 41 and the second capillary tube network 51 are arranged alternately from top to bottom along the axial direction of the inner tube 22, and the plurality of first capillary tubes 41 and the plurality of second capillary tubes 51 form an angle. A pipe interlayer is formed between the outer tube 21 and the inner tube 22. A water supply pipe network and a water return pipe network are provided in the pipe interlayer. The water supply pipe network is connected to the inlet end of the plurality of first capillary tube networks 41 and the second capillary tube network 51 respectively. The water return pipe network is connected to the outlet end of the plurality of first capillary tube networks 41 and the second capillary tube network 51 respectively.

[0027] This invention, by setting up a multi-layered capillary network alternately in the inner tube 22, makes the entire pipe full of heat exchange branch pipes, increasing the contact area between the fluid in the pipe and the heat exchange branch pipes; and the capillaries in adjacent layers of capillary network intersect to form a certain angle, so that during the cross-convective heat exchange between the fluid in the pipe and the capillary network, the flow state of the fluid is easily made turbulent, thereby promoting the convective heat exchange effect and improving the heat exchange efficiency.

[0028] According to one embodiment of this application, a plurality of first capillary tubes 41 and a plurality of second capillary tubes 51 are arranged perpendicularly and intersectingly. The arrangement of a multi-path, perpendicularly intersecting heat exchange branch network within the pipeline allows for cross-convective heat exchange between the working fluid in the pipeline and the heat exchange branch network, facilitating turbulent flow and promoting convective heat transfer.

[0029] According to one embodiment of this application, the outer walls of two adjacent first capillary tubes 41 and second capillary tubes 51 are in contact. This makes the multi-layered heat exchange branch network in the pipeline more dense, and the entire pipeline is filled with heat exchange branch networks. This not only increases the contact area between the fluid in the pipeline and the heat exchange branch networks, but also facilitates the formation of turbulence and improves heat exchange efficiency.

[0030] According to one embodiment of this application, the water inlet network includes a plurality of first water inlet mains 4 and second water inlet mains 5 disposed within a pipe interlayer and extending axially along the inner pipe 22; the water inlet ends of a plurality of first capillary tubes 41 located on the same longitudinal line respectively penetrate the inner pipe 22 and are connected to the same corresponding first water inlet main 4 in the pipe interlayer, such as... Figure 2As shown, the inlet ends of several second capillary tubes 51 located on the same longitudinal line pass through the inner tube 22 and are connected to the corresponding second inlet main pipe 5 located in the interlayer pipe. The inner material of the outer tube 21 can be a material with good thermal conductivity, while ensuring that the first inlet main pipe 4 and the second inlet main pipe 5 are in close contact with the inner tube 22, so that heat exchange can also be formed between the air in the inner tube 22 and the inlet main pipe in the interlayer, greatly improving the heat exchange effect. In addition, the outer tube 21 can also be made of a material with good thermal conductivity or an insulating material as needed. If the heat exchange tube 2 needs to form cold radiation or hot radiation to the outside, the outer tube 21 made of a material with good thermal conductivity is used. In this way, the entire multi-flow heat exchange tube 2 has the function of heat exchange from the inside to the outside, which greatly improves the heat exchange efficiency of the multi-flow heat exchange tube 2, making it a high-efficiency multi-flow heat exchange tube 2. If it is not necessary to form cold radiation or hot radiation to the outside, the outer tube 21 made of an insulating material is used to seal the heat inside the outer tube 21.

[0031] According to one embodiment of this application, the inlet ends of a plurality of first water inlet mains 4 and the inlet ends of a plurality of second water inlet mains 5 extend out to form outer pipes 21 and connect to the main water inlet pipe; the main water inlet pipe 6 is a semi-circular pipe that mates with the outer pipe 21, such as... Figure 3 As shown, water is supplied to the inlet end of the first inlet main pipe 4 and the second inlet main pipe 5 through a semi-circular water inlet main pipe 6 arranged around the outside, which can save pipeline layout space.

[0032] According to one embodiment of this application, the return water unit includes a plurality of first return water mains 42 and second return water mains 52 disposed in the pipe interlayer and extending axially along the inner pipe 22; the inlet ends of a plurality of first capillary tubes 41 located on the same longitudinal line pass through the inner pipe 22 and are connected to the same corresponding first return water main 42 in the pipe interlayer; the outlet ends of a plurality of second capillary tubes 51 located on the same longitudinal line pass through the inner pipe 22 and are connected to the same corresponding second return water main 52 in the pipe interlayer. Similarly, the inner material of the outer tube 21 can be made of a material with good thermal conductivity. This allows the first return water main 42 and the second return water main 52 to be in close contact with the inner tube 22, enabling heat exchange between the air in the inner tube 22 and the return water main in the interlayer, significantly improving the heat exchange effect. Furthermore, the outer tube 21 can be made of a material with good thermal conductivity or an insulating material, depending on the requirements. If the heat exchange tube 2 needs to generate cold or hot radiation, an outer tube 21 made of a material with good thermal conductivity is used. This ensures that the entire multi-flow heat exchange tube 2 has heat exchange capabilities from the inside out, greatly improving its heat exchange efficiency and making it a highly efficient multi-flow heat exchange tube 2. If cold or hot radiation is not required, an outer tube 21 made of an insulating material is used to seal the heat inside the outer tube 21.

[0033] According to one embodiment of this application, the outlet ends of several first return water mains 42 and the outlet ends of second return water mains 52 are both connected to the return water main 7 through the outer pipe 21. The return water main 7 is a semi-circular pipe that mates with the outer pipe 21. By collecting the return water from the outlet ends of the first return water mains 42 and the outlet ends of the second return water mains 52 through a semi-circular return water main 7 arranged around the outer pipe, pipe layout space can be saved.

[0034] This multi-flow, multi-functional, high-efficiency heat exchange tube 2 can perform multiple heat exchange types. The heat exchange branch pipes inside the tube can carry refrigerant, while the channels inside the tube can carry either flowing air or flowing water, enabling cross-convection heat exchange. In this case, the heat exchange branch pipes can act as evaporators, cooling the air or water flowing into the tube to provide cold air or cold water. They can also act as condensers, heating the air or water flowing into the tube to provide hot air or hot water. Furthermore, the heat exchange branch pipes inside the tube can also carry water. If low-temperature cold water is used, it can cool the air or water in the tube to obtain cold air or cold water; if high-temperature hot water is used, it can heat the air or water in the tube to obtain hot air or hot water. The heat exchange supply and return water main pipes and heat exchange branch pipes can be made of copper, which is conducive to efficient heat exchange. For example, the heat exchange supply and return water main pipes can be made of 3*0.5mm copper pipes, the heat exchange branch pipes can be made of 1.8*0.5mm copper pipes, and the inner pipes of the multi-flow heat exchange tube 2 can be made of 20*1mm copper pipes. The size can be adjusted according to actual needs.

[0035] like Figure 4 The radiator shown comprises multiple multi-flow-path, multi-functional, high-efficiency heat exchange tubes 2 as described above. Based on the design of these multi-flow-path, multi-functional, high-efficiency heat exchange tubes 2, this radiator can function as the evaporator of a household split-type air conditioner indoor unit for summer cooling. Whether providing heating in winter or cooling in summer, it utilizes either thermal or cold radiation, resulting in a comfortable experience without any draft.

[0036] According to one embodiment of this application, the radiator further includes a water distributor 1 connected to the inlet end of a plurality of heat exchange tubes 2 and a water collector 3 connected to the outlet end of a plurality of heat exchange tubes 2. During operation of the radiator, water is supplied to the second inlet 61 of the main inlet pipes 6 of a plurality of heat exchange tubes through the water distributor 1, and the return water is collected from the second outlet 71 of the main return pipes 7 of a plurality of heat exchange tubes through the water collector 3.

[0037] According to one embodiment of this application, the first outlet of the water collector 3 is directly connected to the inlet of the water distributor 1 via a heating supply pipe and a heating return pipe. Direct connection between the heating return pipe and the heating supply pipe saves on pipe materials, simplifies the structure, and shortens the pipeline. When heat exchange is required, the valve on the heating return pipe is first opened, and then the circulating water pump on the heating supply pipe is turned on. Driven by the circulating water pump, the water in the heating supply pipe enters the water distributor 1 of the radiator through the inlet, and then enters the multi-flow heat exchange pipe 2 for heating, thereby generating heat radiation to maintain a comfortable room temperature. The water after heat exchange enters the water collector 3, enters the heating return pipe through the outlet, and then re-enters the heating supply pipe, circulating in sequence. Furthermore, this radiator can also function as the evaporator of a household split-type air conditioner indoor unit for summer cooling, although a water tank is required to drain the generated condensate outdoors.

[0038] According to one embodiment of this application, the water collection chamber of the water collector 3 is equipped with a water inlet 32. When the water volume in the heating return pipe is insufficient, water can be added to the circuit through the water inlet 32 ​​to ensure the water pressure in the circuit.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A multi-flow-path, multi-functional, high-efficiency heat exchange tube, characterized in that, It includes an outer tube, an inner tube, and a first capillary network and a second capillary network disposed in the inner tube; The first capillary network includes a plurality of first capillaries arranged in parallel with each other; the second capillary network includes a plurality of second capillaries arranged in parallel with each other; the first capillary network and the second capillary network are arranged alternately from top to bottom along the axial direction of the inner tube, and the plurality of first capillaries and the plurality of second capillaries form an angle between them. A pipe interlayer is formed between the outer pipe and the inner pipe; a water supply network and a return water network are provided in the pipe interlayer; the water supply network is connected to the inlet ends of several first capillary networks and second capillary networks respectively; the return water network is connected to the outlet ends of several first capillary networks and second capillary networks respectively.

2. The multi-flow-path, multi-functional, high-efficiency heat exchange tube according to claim 1, characterized in that, A plurality of first capillaries and a plurality of second capillaries are arranged perpendicularly and intersectingly.

3. The multi-flow-path, multi-functional, high-efficiency heat exchange tube according to claim 1 or 2, characterized in that, The outer walls of the two adjacent first and second capillary networks are in contact.

4. The multi-flow-path, multi-functional, high-efficiency heat exchange tube according to claim 3, characterized in that, The water supply network includes several first and second inlet mains installed within the pipe interlayer and extending axially along the inner pipe; the inlet ends of several first capillary tubes located on the same longitudinal line pass through the inner pipe and are connected to the same corresponding first inlet main in the pipe interlayer; the inlet ends of several second capillary tubes located on the same longitudinal line pass through the inner pipe and are connected to the same corresponding second inlet main in the pipe interlayer.

5. The multi-flow-path, multi-functional, high-efficiency heat exchange tube according to claim 4, characterized in that, The inlet ends of several first water inlet mains and several second water inlet mains extend out to connect with the main water inlet pipe; the main water inlet pipe is a semi-circular pipe that mates with the outer pipe.

6. The multi-flow-path, multi-functional, high-efficiency heat exchange tube according to claim 3, characterized in that, The return water network includes several first and second return water mains installed in the pipe interlayer and extending along the axial direction of the inner pipe; the inlet ends of several first capillary tubes located on the same longitudinal line pass through the inner pipe and are connected to the same corresponding first return water main in the pipe interlayer; the outlet ends of several second capillary tubes located on the same longitudinal line pass through the inner pipe and are connected to the same corresponding second return water main in the pipe interlayer.

7. The multi-flow-path, multi-functional, high-efficiency heat exchange tube according to claim 6, characterized in that, The outlet ends of several first return water mains and the outlet ends of second return water mains both pass through the outer pipe and are connected to the main return water pipe, which is a semi-circular pipe that cooperates with the outer pipe.

8. A radiator, characterized in that, It includes multiple multi-flow-path, multi-functional, high-efficiency heat exchange tubes as described in any one of claims 1-7.

9. The radiator according to claim 8, characterized in that, The radiator also includes a water distributor connected to the inlet end of each of the plurality of heat exchange tubes and a water collector connected to the outlet end of each of the plurality of heat exchange tubes; the water collection chamber of the water collector is provided with a water inlet.

10. The radiator according to claim 9, characterized in that, The outlet of the water collector and the inlet of the water distributor are directly connected through the heating water supply pipe and the heating water return pipe.

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